I’m currently working with 7.22.2 and have no issues at all.
I think you’ll need to provide a little more context. How are you trying to open the apps? Are you opening them in the modeler? Are opening the actual app? Where are you running the app? What are you using to open the app?
If you are unable to open an app, what are the symptoms of you not being able to open? Are there any indicators like error messages, either on screen or in the logs?